Multi - effect evaporation and concentration unit
The heat released by condensation of a kilogram of steam and the heat absorbed by evaporation of a kilogram of water are basically the same, so for single-effect evaporation, a kilogram of water to evaporate materials, need to consume a kilogram of new steam; If the secondary steam obtained from evaporation is used as the heating steam of the next effect, the energy consumption of the secondary effect steam and the new steam is 50% less than that of the single effect. Efficiency increases, the use of steam decreases, but the investment in equipment increases a lot, so generally not more than 5 efficiency.
